Ultra-large rectangular ingot blank sloping casting combined manufacturing device and method

Abstract

The invention relates to an ultra-large rectangular ingot blank sloping casting combined manufacturing device and an ultra-large rectangular ingot blank sloping casting combined manufacturing method. The device comprises a rectangular casting mould, wherein the rectangular casting mould is tilted at an angle of 5 to 15 degrees to the horizontal plane along the length direction; the rectangular casting mould is a combined structure consisting of a forced cooling metal bottom plate, four side plates and a cover plate; a metal pipe frame is arranged in the forced cooling metal bottom plate; facing sand layers are hung on the forced cooling metal bottom plate, the cover plate and the inner side of each side plate; a riser is arranged at the highest position of the assembled rectangular casting mould; and a molten steel pouring device, into which molten steel is injected, is arranged on the rectangular casting mould. By the device, static pressure and an impact force of the molten steel on a cast are reduced; the cost of manufacturing the cast is reduced; the cast is modeled, assembled and disassembled simply and flexibly; a box can be opened when the box is hot; harmful substances such as impurities, gases and the like are aggregated to the riser on the inclined top easily and then are removed; the ingot blank can be directionally solidified; internal shrinkage of the cast is eliminated; sponginess of the cast is reduced; and the quality of the ingot blank is improved.

Description

technical field [0001] The invention relates to an ingot manufacturing device in the field of metallurgy, in particular to a combined manufacturing device and method for obliquely casting a super-large rectangular ingot. Background technique [0002] As a well-known technology, the continuous casting method has been widely used in the manufacture of slabs, especially for the batch production of thin slabs, medium slabs and medium-thick slabs with a thickness of less than 400mm. It is characterized by high efficiency, good quality, The effective utilization rate of metal is high. However, for plates for super large ships, plates for nuclear reaction equipment, plates for chemical reaction vessels in the chemical industry, plates for hydroelectric power generation, plates for marine structures, etc., the billets are produced in a single batch with small batches and large specifications (ultra-wide, super thick), special material requirements, if the continuous casting method ...

AI Technical Summary

Problems solved by technology

Among them, the vertical ingot mold casting method increases the static pressure and impact force of the molten steel on the mold, which requires higher structural strength of the mold, making it difficult for the mold to realize a combined structure, which greatly increases the production of the mold structure cost; while the existing horizontal ingot casting method is to use a completely horizontal casting mold to manufacture ingots, so that large-scale steel ingots are cast and solidified, and harmful substances such as impurities and gases float on the upper surface of molten steel and accumulate to a certain extent. The depth cannot be ruled out, which affects the quality of the ingot; when processing the ingot, it is necessary to plan the upper surface of the ingot to a certain depth by mechanical processing, which invisibly increases the processing cost

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